Switchboard Adapter Heat Removal via Forced Air Convection

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Solution Overview

Problem

The existing adapter devices for removable and withdrawable switch installations in switchboards generate excessive heat due to increased electrical resistance and poor thermal management, limiting the power that can be drawn by appliances and leading to overheating issues.

Innovation Solution

The adapter device incorporates heat removal means, such as internal and external fans, to force convection of air through the connection area, reducing heat buildup and improving thermal efficiency by channeling air through compartments and ducts, effectively addressing the heat management issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adapter devices are used for removable and withdrawable switch installations, then installation flexibility and speed are improved, but heat generation increases due to increased electrical resistance

Engineering Contradiction:
Improveinstallation flexibilityVSAvoidheat generation
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The invention extracts the heat removal function from the conventional adapter device by adding dedicated heat removal means (fans, ducts, compartments) that actively remove heat from the connection area, thereby resolving the heat generation problem while preserving the installation flexibility benefits of adapter devices

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention introduces air as an intermediary cooling medium that circulates through the connection area via fans and ducts, transferring heat away from the high-resistance connection points and reducing the harmful thermal effects while maintaining the electrical connection functionality

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If adapter devices with socket and pin type connections are used, then installation speed is improved, but electrical resistance increases leading to heat buildup

Engineering Contradiction:
Improveinstallation speedVSAvoidenergy loss to heat
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The invention converts the harmful heat generated by the necessary socket and pin connections into a manageable thermal field by introducing active cooling systems that utilize the heat generation as an indicator of where cooling is most needed, thereby maintaining installation speed while reducing energy loss

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Adaptability or versatility

If multiple electrical connection elements are used in series, then installation flexibility is improved, but total electrical resistance increases

Engineering Contradiction:
Improveinstallation flexibilityVSAvoidelectrical conductivity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The invention introduces forced air convection as an intermediary cooling mechanism that compensates for the increased electrical resistance caused by multiple connection elements, maintaining reliable electrical conductivity by preventing thermal effects that would degrade performance

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution effectively reduces heat generation, allowing for higher power draw and improved reliability, safety, and efficiency in switchboard installations by maintaining lower operating temperatures and enhancing the adapter device's thermal management capabilities.

Implementation Method 1

The heat removal means comprise fan means to force air movement, in particular to force air toward the electric connection area, so as to produce a flow of forced air

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 2

The fans are able to move air toward the electric connection area, so as to force air movement that passes through said electric connection area

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP2256884B1Cooling of terminal contacts of a withdrawable switch
Publication Date: 2017.01.25 ABB SPA
  • EP2256884B1 patent drawingFigure 1
  • EP2256884B1 patent drawingFigure 2
  • EP2256884B1 patent drawingFigure 3

AI summary

An adapter device (1; 201; 401; 501) for housing a multi-phase low voltage type switch (2) inside a switchboard (100), comprising, for each phase: - first and second electric connection means (31, 32) with the switch (2); - third and fourth electric connection means (33, 34) with an electric distribution network (4); the adapter device (1; 201; 401; 501) is structured so as to define a connection area (10) housing the first and second electric connection means (31, 32), and also comprising heat removal means (5; 205; 405; 505) which remove heat from the connection area (10).