Compressor Terminal Cover Power Line Separation
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Solution Overview
Problem
In hermetic compressors, the six power connection lines extending from the compressor to the inverter often become confusingly connected, leading to incorrect connections between the first and second sealed terminals.
Innovation Solution
A compressor design featuring glass-sealed terminal assemblies with dedicated guides and protectors, and a terminal cover that directs power lines away from each other, ensuring clear distinction and preventing incorrect connections by using separate outlets for each set of power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If six power connection lines extend through a single opening in the terminal box, then the structure is simple, but it becomes difficult to determine which line connects to which terminal, leading to incorrect connections
Solution Approach 1:
The single opening is segmented into multiple separate openings (first opening and second opening), with each opening dedicated to a specific terminal assembly. This segmentation allows clear identification of which power lines connect to which terminals, eliminating confusion while maintaining structural simplicity through organized separation.
Solution Approach 2:
Power line guides are introduced as intermediary components that physically guide and distinguish the power lines extending from each terminal assembly. These guides act as mediators that prevent line entanglement and provide visual/physical cues for correct connection, thereby improving connection accuracy without significantly complicating the overall structure.
2Ease of manufacture
If power lines are allowed to extend freely, then installation is simple, but incorrect connections occur due to line confusion
Solution Approach 1:
The terminal cover and power line guides are pre-configured with specific pathways and openings before assembly. This preliminary arrangement ensures that power lines are automatically directed to the correct terminals during assembly, preventing incorrect connections without requiring complex manual routing or identification procedures during installation.
Solution Approach 2:
The terminal cover serves as an intermediary component that houses and organizes the power lines before they extend outward. By providing a structured environment within the terminal cover, it ensures proper line arrangement and connection accuracy while maintaining ease of assembly through a modular design that integrates smoothly with the existing terminal box structure.
Data Source
Figure 1
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Figure 4~5
AI summary
A compressor includes a terminal cover. The terminal cover includes a first terminal protector protecting a first glass-sealed terminal assembly, a first power line guide guiding first power lines connected to the first glass-sealed terminal assembly, a first power line outlet through which the first power lines extend outward, a second terminal protector protecting a second glass-sealed terminal assembly, a second power line guide guiding second power lines connected to the second glass-sealed terminal assembly, and a second power line outlet through which the second power lines extend outward. The first power line guide guides the first power lines in a guiding direction away from the second terminal protector. The second power line guide guides the second power lines such that the second power lines bypass the first terminal protector and are directed in a direction identical to the guiding direction.