Switchboard Cooling Unit Segmentation for Maintenance

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Solution Overview

Problem

Conventional switchboards require shutdown for maintenance of the cooling unit, as they do not allow separation of the cooling unit from the power supply, leading to reduced durability and inconvenient maintenance.

Innovation Solution

A switchboard design with a detachable cooling unit that includes a sliding mechanism, temperature-controlled cooling fan, and a state displaying unit, allowing for easy separation and maintenance of the cooling unit during operation, and adjusting fan output based on temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cooling unit is integrated with the switchboard power supply, then the cooling unit can be controlled together with the switchboard, but maintenance of the cooling unit requires shutting down the entire switchboard

Engineering Contradiction:
Improvecooling control reliabilityVSAvoidmaintenance convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The power supply system is segmented into a main power supply for the switchboard and a separate auxiliary power supply for the cooling unit. This allows the cooling unit to be maintained independently without shutting down the entire switchboard, resolving the contradiction between integrated control reliability and maintenance convenience.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cooling unit's power supply is extracted from the main switchboard power system and provided through a separate auxiliary power supply. This enables independent operation and maintenance of the cooling unit while maintaining reliable integrated control when both systems operate together.

Inventive Principle:
Principle #2Taking out (Extraction)

2Temperature

If the cooling unit operates continuously regardless of temperature, then the switchboard is always cooled, but the durability of the cooling unit is reduced

Engineering Contradiction:
Improveswitchboard cooling effectivenessVSAvoidcooling unit durability
Core Design Contradiction:
TemperatureVSDuration of action of stationary object

Solution Approach 1:

A temperature detection device continuously monitors the switchboard temperature and provides feedback to the control unit. The control unit adjusts the cooling fan operation based on this feedback, operating the cooling unit only when temperature thresholds are exceeded, thereby maintaining effective cooling while extending cooling unit durability through reduced continuous operation.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Instead of continuous operation, the cooling unit operates periodically based on temperature conditions. The control unit activates the cooling fan only when the temperature detection device signals that the switchboard temperature exceeds the predetermined threshold, reducing wear and extending the cooling unit's service life while maintaining adequate cooling.

Inventive Principle:
Principle #19Periodic action

3Object-affected harmful factors

If a filter is used in the cooling system, then foreign substances are filtered out, but the filter accumulates foreign substances and requires replacement or cleaning

Engineering Contradiction:
Improveforeign substance filtrationVSAvoidfilter maintenance complexity
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The cooling unit is designed with a detachable structure that allows the filter to be easily removed, cleaned, or replaced by the user without requiring professional service or shutting down the switchboard. The separate auxiliary power supply enables this maintenance to occur while the switchboard remains operational, making filter maintenance a simple self-service task.

Inventive Principle:
Principle #25Self-service

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

Enables maintenance of the cooling unit without shutting down the switchboard, extends the durability of the cooling unit by optimizing fan output based on temperature, and allows users to easily check the separation status of the cooling unit.

Implementation Method 1

a cooling unit for introducing an external air through the air inlet to the inside of the housing and discharging an air of the inner space through the air outlet to the outside of the housing

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentUS20240195156A1Switchboard provided with cooling unit
Publication Date: 2024.06.13 LS ELECTRIC CO LTD
  • US20240195156A1 patent drawing
  • US20240195156A1 patent drawing
  • US20240195156A1 patent drawing

AI summary

A switchboard having a cooling unit is provided. The switchboard having the cooling unit according to an embodiment of the present disclosure may include a housing having an inner space, an air inlet formed at one side thereof, and an air outlet formed at the other side thereof; a heat source disposed at one side of the inner space; a cooling unit for introducing an external air through the air inlet to the inside of the housing and discharging an air of the inner space through the air outlet to the outside of the housing; and a support plate disposed in the inner space and coupled to the cooling unit to allow the cooling unit to enter and exit the inner space.