Connector post of refrigeration compressor

Abstract

The invention relates to a terminal part of a compressor, in particular to a binding post of a cold compressor of highly reliable ceramic insulation medium connection. The binding post comprises an end cover which is welded with a shell of the compressor, and a conductive pillar that is sealed and connected with the end cover by glass; wherein, the glass is used for playing the role of insulation and sealing, the conductive pillar is provided with an insulator separating the surface of the glass from the air, and the insulator is made of the following materials: 92-96% of aluminium oxide, 2-3% of silicon oxide, 1-3% of calcium oxide, 0.5-1.0% of bismuth oxide and 0.5-1.0% of antimony oxide. The binding post has the advantages that specially prepared aluminum oxide ceramics is adopted to replace steatite ceramics (or forsterite) to be taken as the insulator, so that the creep age distance is prolonged, and the phenomenon of overflash is avoided in the low vacuum environment, thereby effectively avoiding the serious result of compressor explosion. At the same time, the expansion of microcrack is prevented, and the probability of air leakage is effectively reduced, so that good connecting effect is formed.

Description

technical field [0001] The invention relates to a compressor terminal component, in particular to a refrigeration compressor connecting post connected with a highly reliable ceramic insulating medium. Background technique [0002] The glass-metal sintered terminal is an important part of the refrigeration compressor, through which the external power is transmitted to the inside of the compressor for the motor and other parts to work. The air tightness, insulation resistance, and withstand voltage strength are important performance indicators of the terminal. The traditional compressor terminal structure such as figure 1 and figure 2 As shown, the end cover 10 is welded to the compressor casing by resistance welding, and the conductive column 20 is sealed together with the end cover 10 by a special glass 30, and the glass 30 plays the role of insulation and sealing. [0003] At present, some foreign companies use talc porcelain (or forsterite) as insulators. Because talc ...

AI Technical Summary

Problems solved by technology

[0006] (1) The existing refrigeration compressors are prone to the following accidents: short circuit caused by high voltage breakdown (High Voltage Breakdown) in the terminals of the refrigeration compressor, causing the compressor to burn out; or low vacuum flashover (Low Vacuum Spark) Cause refrigerant explosion, resulting in compressor safety accidents

[0007] (2) The expansion of cracks on the glass surface of the existing terminal leads to the reduction of air tightness and electrical performance (including withstand voltage and insulation);

[0008] (3) The chemical performance stability of other types of ceramic insulators is poor

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