Compressor Sealed Terminals Triangular Plate Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional compressors face challenges in managing increased compression load and temperature rise during energization, leading to difficulties in securely connecting power lines to sealed terminals without applying excessive bending stress and ensuring efficient manufacturing connections.
Innovation Solution
The compressor design features a pair of sealed terminals with three plate-shaped terminals arranged in a triangular configuration, accompanied by terminal blocks that separate power lines, allowing for secure screwing and efficient connection without excessive stress, and includes a refrigeration cycle apparatus with a radiator, expansion device, and heat absorber for refrigerant circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If Faston terminals are used to connect power lines to sealed terminals, then the connection is simple and quick, but the terminals cannot cope with the temperature rise at the time of energization
Solution Approach 1:
The patent changes the terminal connection type from Faston terminals to plate-shaped terminals with screw fastening. This parameter change allows for larger contact area and better heat dissipation, enabling the terminals to cope with temperature rise during energization while maintaining manufacturing efficiency through standardized components.
Solution Approach 2:
The patent employs standard plate-shaped terminals and screw fasteners that are readily available and can be easily replaced if needed. These components are designed to handle thermal stress without requiring specialized expensive materials, maintaining cost-effectiveness while improving temperature resistance.
2Reliability
If multiple terminal blocks are arranged side by side for each sealed terminal, then each terminal can be securely connected, but the arrangement becomes difficult without interference and workability decreases
Solution Approach 1:
The patent merges the functions of multiple terminal blocks into a single integrated terminal block structure. This unified design allows all terminal connections to be made through one component rather than arranging multiple separate terminal blocks side by side, eliminating interference issues while maintaining secure connections and improving workability.
Solution Approach 2:
The terminal block is designed with multi-functionality to handle all terminal connections within a single structure. It provides multiple connection points and routing paths that can accommodate all sealed terminals without requiring separate dedicated terminal blocks for each connection, thereby simplifying the overall arrangement.
3Reliability
If power lines are routed through multiple sealed terminals and terminal blocks, then electrical connections are established, but excessive bending stress is applied to the power lines
Solution Approach 1:
The patent introduces an intermediary routing structure within the terminal block that provides smooth transition paths for power lines. This intermediary design allows power lines to change direction gradually rather than through sharp bends, reducing bending stress while maintaining reliable electrical connections between sealed terminals and external circuits.
Solution Approach 2:
The terminal block is designed with built-in stress relief features and adequate routing space that cushion the power lines against excessive bending stress. This beforehand cushioning prevents durability issues by accommodating natural line movement and thermal expansion without creating stress concentration points.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A compressor (2) includes: an airtight container (11); a compression mechanism (13) accommodated in the airtight container (11); a motor (12) including a cylindrical stator (31) fixed to an inner surface of the airtight container (11) and a rotor (32) disposed inside the stator (31) to generate rotational driving force of the compression mechanism (13); and a pair of sealed terminals (18, 19) arranged in the airtight container (11). Three first plate-shaped terminals (75) of each sealed terminal (18, 19) are aligned with each side of a triangle (D) and faces each other on the front surface (75f) so as to form the triangle (D) across the three first plate-shaped terminals. One of corners (Co) of the triangle (D1) formed by the three first plate-shaped terminals (75) of one of the sealed terminals (18, 19) faces one of corners (Co) of the triangle (D1) formed by the three first plate-shaped terminals (75) of another of the sealed terminals (18, 19).