Printed Coatings on Switchgear Metal Walls for Heat Dissipation
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Solution Overview
Problem
The existing process of masking and painting switchgear compartments is time-consuming and costly, and the seals need to be manually verified for integrity, while there is a need for improved heat dissipation from switchgears.
Innovation Solution
Applying a coloured coating to the surfaces of switchgear components, such as stainless steel sheets and copper busbars, using a printer to enhance radiation emission and simplify the manufacturing process, allowing for efficient heat dissipation without manual masking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If manual masking and wet painting is used to increase heat dissipation, then emissivity is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent replaces the mechanical manual masking and wet painting process with a digital printing system that directly applies coloured coating to metal surfaces. The printer uses digital patterns to control coating application, eliminating the need for physical masks and manual painting operations, thereby reducing manufacturing time while achieving the same thermal emissivity enhancement.
Solution Approach 2:
The patent changes the application method parameter from wet paint to coloured coating applied by a printer. This parameter change allows for precise control of coating placement and thickness through digital programming, eliminating the time-consuming manual masking process while maintaining the thermal performance benefits of increased emissivity.
2Manufacturing precision
If manual masking is used to protect areas from painting, then coating precision is improved, but process complexity increases
Solution Approach 1:
The patent replaces the complex manual masking process with a digital printing system that uses programmed patterns to precisely control where coating is applied. The printer head moves according to digital instructions, automatically protecting areas that should remain uncoated without requiring physical masks or manual intervention, thereby reducing process complexity while maintaining coating precision.
Solution Approach 2:
The patent applies coloured coating to metal walls before welding to form compartments. This preliminary action allows the coating to be applied to flat surfaces more easily and uniformly, and any areas requiring bare metal for welding or sealing are simply excluded from the digital printing pattern, eliminating the need for post-welding masking and repainting operations.
3Temperature
If coloured coating is applied to all surfaces, then heat dissipation is maximized, but welding integrity is compromised
Solution Approach 1:
The patent applies coloured coating selectively to specific surfaces of metal walls using digital printing patterns. Areas that require welding or sealing are programmed to remain uncoated, ensuring bare metal contact for proper welding integrity and seal formation. Other surfaces are coated to maximize heat dissipation through increased emissivity, achieving local optimization of both thermal performance and structural integrity.
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 process simplifies the manufacturing of switchgear components by eliminating manual masking and enables efficient heat dissipation through programmed printing, achieving thermal performance comparable to traditional wet paint techniques with reduced costs and time.
Implementation Method 1
The coloured coating has been applied by a printer... to enhance radiation emission from the switchgear and thus a cooling
Implementation Method 2
the walls absorb heat from the internal parts of the switchgear, which are hotter than the walls
Data Source
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AI summary
The present invention relates to a metal wall (60) for a compartment (20, 30, 40, 50) of a switchgear (100); wherein the metal wall comprises a stainless steel sheet; wherein at least a portion of a surface of the stainless steel sheet of the metal wall that faces outwards when the metal wall forms the compartment of the switchgear has a coloured coating; and wherein the coloured coating has been applied by a printer.