Integrated Arc Chute Assembly for Debris Blocking and Arc Quenching
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Solution Overview
Problem
Conventional circuit interrupters face challenges with arc chute assemblies, debris blockers, and slot motors being separate components that require specific alignment and dimensional stability, leading to inefficiencies and potential hazardous situations due to disconnections and limited debris containment and magnetic enhancement capabilities.
Innovation Solution
Integration of arc chute components, slot motor, and debris blocker into a single device, where the arc chute assembly includes distal elements to induce a magnetic field for accelerating contact opening and a debris blocker component to collect and trap debris, eliminating the need for separate components and enhancing arc quenching and debris blocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If arc chute assemblies, debris blockers, and slot motors are used as separate components, then each component can be independently manufactured and assembled, but they require specific alignment and dimensional stability, leading to potential disconnections and hazardous situations
Solution Approach 1:
The patent combines the arc chute assembly, debris blocker, and slot motor into a single integrated unit. The arc chute assembly includes arc plates for quenching arcs, a debris blocker for containing debris, and a slot motor for generating magnetic fields, all integrated into one structure that eliminates alignment issues between separate components
Solution Approach 2:
The integrated arc chute assembly performs multiple functions simultaneously: it quenches arcs through the arc plates, contains debris through the integrated debris blocker, and generates magnetic fields through the slot motor. This multi-functional design eliminates the need for separate components and their associated alignment requirements
2Ease of manufacture
If conventional debris blockers with flat side walls are used, then manufacturing is simple, but debris can bounce off the walls and still enter the operating mechanism area
Solution Approach 1:
The debris blocker in the integrated arc chute assembly features curved or angled surfaces instead of simple flat walls. These curved surfaces are designed to deflect debris away from the operating mechanism area, preventing bouncing debris from entering sensitive areas while maintaining manufacturing feasibility
3Ease of operation
If separate components are press-fit and held together, then assembly is straightforward, but they require specific alignment, placement, and dimensional stability to maintain functionality
Solution Approach 1:
The patent integrates the arc chute assembly, debris blocker, and slot motor into a single monolithic structure or tightly integrated unit with fixed relative positions. This eliminates the need for press-fitting and alignment between separate components, as all elements are positioned precisely during manufacturing of the integrated unit
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 integrated solution enhances debris blocking and magnetic field generation, improves structural integrity, and reduces manufacturing costs by eliminating the need for separate components, while effectively containing debris and accelerating contact opening during faults.
Implementation Method 1
the arc being magnetically drawn toward and between the arc plates
Implementation Method 2
the electrical current interacts electromagnetically with the slot motor to induce a magnetic field
Implementation Method 3
the electrical current interacts electromagnetically with the slot motor to induce a magnetic field in the magnetic material of the slot motor, which then accelerates the separation of the separable contacts
Implementation Method 4
the arc is stretched and cooled until extinguished
Implementation Method 5
the arc transfers to the arc plates where it is stretched and cooled
Data Source
AI summary
An arc chute assembly includes a first arc side and a second arc side opposite and spaced apart from the first arc side, each arc side including a first vertical edge, a second vertical edge, and a debris blocker component at the second vertical edge, where the debris blocker component is disposed proximate to the separable contacts and structured to contain debris generated during an interruption; and a plurality of arc plates disposed between the arc sides, the separable contacts disposed within the plurality of arc plates, each arc plate including a base and two legs each extending from the base and comprising a distal element proximate to the separable contacts, where each arc plate is structured to attract and quench an arc generated upon opening of the separable contacts associated with the interruption and the distal element is structured to accelerate the opening of the separable contacts.