Hinged Terminal Block Box Layout for Heat Pump Maintenance

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Solution Overview

Problem

Conventional control box arrangement structures for cogeneration apparatuses do not facilitate easy maintenance of electrical devices in heat pumps, as they lack a terminal block box arrangement that can expose electrical components for access.

Innovation Solution

A heat pump with a terminal block box housed between side plates of the package, rotatable in a horizontal direction by a hinge, allowing easy access to electrical devices and incorporating a remote monitoring apparatus within the terminal block box to reduce space requirements and protect sensitive components from dew condensation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If the terminal block box is fixed in position within the package, then the structural simplicity is maintained, but the maintenance accessibility of electrical devices is poor

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoidstructural complexity
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The terminal block box is made rotatable about a vertical axis through the use of a hinge mechanism, transforming it from a fixed static structure to a dynamic one. This allows the box to be rotated between a closed position (for structural compactness) and an open position (for maintenance accessibility), enabling easy access to electrical devices without permanently increasing structural complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The terminal block box is separated from the main package structure as an independent rotatable module. This segmentation allows it to be independently operated and positioned, facilitating maintenance access while maintaining the overall integrity of the package when in the closed position

Inventive Principle:
Principle #1Segmentation

2Ease of repair

If the terminal block box is made rotatable to improve maintenance access, then the ease of repair is improved, but the structural stability is reduced

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoidstructural stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The hinge mechanism enables controlled rotation of the terminal block box, providing structural flexibility when needed for maintenance while maintaining structural stability during normal operation when the box remains in the closed position. The dynamic design allows the structure to adapt between stability and accessibility as required

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The terminal block box is extracted as a separate accessible module from the main package structure, connected through a hinge. This extraction allows it to be independently positioned for maintenance without compromising the structural integrity of the remaining package, as the box can be rotated out when needed while maintaining its sealed position during operation

Inventive Principle:
Principle #2Taking out (Extraction)

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 easier maintenance of electrical devices by exposing them for access and protecting sensitive components from dew condensation, while optimizing space usage by integrating the remote monitoring apparatus within the terminal block box.

Implementation Method 1

the terminal block box is supported and made rotatable in a horizontal direction by a hinge

Methodology Applied
Scientific EffectHinge: Hinge

Data Source

PatentUS10240523B2Heat pump
Publication Date: 2019.03.26 YANMAR POWER TECH CO LTD
  • US10240523B2 patent drawing
  • US10240523B2 patent drawing
  • US10240523B2 patent drawing

AI summary

The heat pump includes a terminal block box housing a terminal block for supplying an electric power to at least one electrical device. The terminal block box is supported and made rotatable in a horizontal direction by a hinge. The terminal block box is located between a portion of side plates of a package and electromagnetic valves located on the side of the portion of the side plates. As a result, maintain of electrical devices can easily be performed.