Reactor Core Case Structure for Faster Gap-Controlled Assembly

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Solution Overview

Problem

The existing reactor manufacturing process is time-consuming due to the need for precise assembly of core pieces with complex mechanical components, which decreases productivity and increases costs.

Innovation Solution

A reactor design featuring a first case with a closed loop shape, multiple core pieces, and a partition to separate adjacent core pieces, allowing for a simplified assembly process and reduced reliance on complex mechanical components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If core pieces are assembled with complex mechanical components to ensure precise positioning, then positioning accuracy is improved, but assembly time increases and productivity decreases

Engineering Contradiction:
Improvecore piece positioning accuracyVSAvoidassembly speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent removes complex mechanical positioning components (such as bolts, clips, or mechanical fasteners) from the core assembly structure. Instead, it uses the magnetic field generated by the coil to provide the necessary holding force, extracting the mechanical positioning function and replacing it with a magnetic field-based solution that requires no additional mechanical parts.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes the mechanical positioning and holding system with a magnetic field-based system. The coil generates a magnetic field that automatically positions and secures the core pieces without mechanical contact, replacing traditional mechanical fastening mechanisms with electromagnetic forces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Stability of the object's composition

If more mechanical components are used to secure core pieces, then structural stability is improved, but device complexity increases

Engineering Contradiction:
Improvecore assembly stabilityVSAvoidnumber of mechanical components
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent extracts and removes mechanical securing components from the assembly structure. The design relies solely on the magnetic field generated by the coil to provide both positioning and stabilization functions, eliminating the need for mechanical fasteners, clips, or other structural securing elements.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The magnetic field generated by the coil serves multiple functions simultaneously: it generates the required magnetic flux for the reactor's operation, provides automatic positioning of core pieces, and maintains structural stability. The system uses its own operational magnetic field to perform structural functions, eliminating the need for separate mechanical stabilization components.

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

This design enables a more efficient and cost-effective production of reactors by managing core gaps through the reactor's outer dimensions, improving productivity and reducing assembly time.

Implementation Method 1

a coil (30) which is wound around a closed magnetic path

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a plurality of first core pieces (21) disposed inside the first case (10)... a second core piece (22) disposed so as to form a closed magnetic path having a closed loop shape

Methodology Applied
Scientific EffectMagnetic flux conduction: Magnetic Field

Data Source

PatentUS11948718B2Reactor
Publication Date: 2024.04.02 MITSUBISHI ELECTRIC CORP
  • US11948718B2 patent drawing
  • US11948718B2 patent drawing
  • US11948718B2 patent drawing

AI summary

Inside a first case outer frame portion as an outer frame of the first case, a plurality of first core pieces and a partition to separate a pair of adjacent first core pieces among the plurality of first core pieces are disposed. The first case has a shape capable of accommodating at least a part of the second core piece. The first case outer frame portion includes a first case accommodating portion as a portion of the first case outer frame portion that is capable of accommodating the plurality of first core pieces, and a first case cover portion to cover a space inside the first case accommodating portion.