Air Circuit Breaker Coil Adapter for Obsolete Cylindrical Units
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Solution Overview
Problem
The incompatibility between obsolete cylindrical operating coil units and newer cuboid units in air circuit breakers necessitates costly and time-consuming upgrades, as manufacturers discontinue support for older models, making it impractical to replace individual parts or adapt existing systems.
Innovation Solution
An air circuit breaker coil adapter that houses a non-cylindrical operating coil unit, featuring a coil unit housing with a locator and retainer elements to securely fit into the air circuit breaker housing, allowing for the replacement of cylindrical coil units with non-cylindrical ones without requiring a full system upgrade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If obsolete cylindrical operating coil units are used in air circuit breakers, then the existing systems can continue to operate, but compatibility with newer non-cylindrical units is lost and system upgrades become necessary
Solution Approach 1:
The patent introduces an adapter as an intermediary component that bridges the incompatibility between obsolete cylindrical coil units and newer non-cylindrical units. The adapter receives the old cylindrical coil unit and interfaces it with the breaker housing designed for non-cylindrical units, allowing the existing coil unit to function in the upgraded system without requiring full replacement
Solution Approach 2:
The solution segments the upgrade process into separate components: the adapter, the coil unit, and the breaker housing. This allows the coil unit to remain unchanged while the adapter provides the necessary interface, enabling selective replacement rather than complete system overhaul and reducing upgrade time
2Reliability
If obsolete cylindrical operating coil units are used in air circuit breakers, then existing systems can continue to operate, but manufacturing support is discontinued and part adaptation becomes difficult
Solution Approach 1:
The adapter serves as a mediator that enables continued use of obsolete coil units in upgraded breakers. By providing a standardized interface between the old cylindrical units and new breaker housings, the adapter maintains operational reliability while circumventing the lack of manufacturing support for obsolete parts
Solution Approach 2:
The adapter is designed as a universal component that can interface with multiple types of coil units and breaker housings. This multi-functionality allows a single adapter design to support various obsolete coil unit types, making part adaptation easier despite discontinued manufacturing support
3Adaptability or versatility
If complete system replacement is performed to upgrade from cylindrical to non-cylindrical coil units, then compatibility is achieved, but costs and downtime increase significantly
Solution Approach 1:
The adapter acts as an intermediary that simplifies the upgrade process by providing a standardized interface between old and new components. This reduces upgrade complexity by allowing straightforward installation of the adapter and coil unit assembly without complex modifications to the breaker housing or other components
Solution Approach 2:
The upgrade is segmented into modular components (adapter, coil unit, housing) that can be installed independently. This modularity reduces overall system complexity by allowing the upgrade to be performed in discrete steps rather than requiring complete system replacement, thereby reducing both cost and downtime
Data Source
AI summary
Air circuit breaker coil adapter for adapting an air circuit breaker, comprises: a coil unit housing for releasably receiving an air circuit breaker coil unit, the coil unit housing having a coil retainer element for preventing or limiting upward movement of an air circuit breaker coil unit therein; a locator at a bottom end of the coil unit housing for positively locating the coil unit housing in a plunger aperture of an air circuit breaker housing, the locator having a plunger aperture therethrough by which an interior of the coil unit housing is in-use communicable with an interior of the air circuit breaker housing; and a housing retainer element for at least in part preventing or limiting vertical displacement of the coil unit housing. An air circuit breaker using such an adapter and a method of adapting an air circuit breaker are also provided.