Thermal Dissipation System for Electrical Enclosures
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Solution Overview
Problem
Current heat dissipation systems in electrical enclosures are inadequate for efficiently cooling multiple electrical devices, as they fail to effectively regulate temperature, particularly when numerous devices are present.
Innovation Solution
A heat dissipation system that includes adjustable airflow control via programmable logic controller, diffusion orifices in ducts, internal cooling fins, and a ventilation device with an air conditioner, along with a circulation chamber and support for electrical devices, such as a DIN rail, to enhance cooling gas circulation and convection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a simple fan or air conditioning system is used for heat dissipation, then the device complexity is low, but the cooling efficiency for multiple electrical devices is insufficient
Solution Approach 1:
The enclosure is divided into multiple zones with separate ducts for each zone, allowing independent temperature control and optimized cooling distribution to multiple electrical devices simultaneously
Solution Approach 2:
The system uses adjustable dampers in each duct that can be dynamically controlled by a programmable logic controller based on temperature sensors, enabling adaptive cooling distribution to match the actual thermal loads of different zones
2Measurement precision
If cooling gas is circulated without flow adjustment, then the system is simple to operate, but the temperature regulation precision is poor
Solution Approach 1:
Temperature sensors are installed in each zone to continuously monitor temperature, and the programmable logic controller uses this feedback to automatically adjust damper positions, achieving precise temperature regulation without manual intervention
Solution Approach 2:
The system automatically regulates its own operation through the programmable logic controller that adjusts dampers based on temperature sensor readings, eliminating the need for manual operation while maintaining precision
3Stability of the object's composition
If cooling gas is not diffused into the enclosure volume, then the duct structure is simple, but the cooling gas distribution uniformity is poor
Solution Approach 1:
The ducts are equipped with diffusers that distribute cooling gas through multiple small openings along the duct length, creating uniform gas distribution throughout the enclosure volume rather than concentrated flow at single points
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 system effectively regulates temperature by optimizing airflow and convection, ensuring efficient cooling of multiple electrical devices within the enclosure.
Implementation Method 1
an axial or radial type fan circulates the gas
Implementation Method 2
electrical or electronic devices which dissipate heat in the form of calories
Implementation Method 3
bring cooling gas into the envelope and for discharging it out of the envelope
Implementation Method 4
an air conditioner arranged to cool the cooling gas
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
The invention relates to a heat dissipation system intended to regulate the temperature of an electrical device (2) placed in a volume delimited by an electrical enclosure (1) and comprising: - a ventilation device (4) for a cooling gas (G) intended to circulate a cooling gas, - a distribution chamber (5) in communication with the ventilation device and in which the cooling gas is pressurized by the ventilation device (4), - at least one conduit arranged in the volume of the electrical enclosure (1), in communication with the distribution chamber (5) to receive the cooling gas (G) from said chamber, - a programmable logic controller (PLC) arranged to control the ventilation device (4) in order to obtain a determined pressure in said distribution chamber (5).