Compressor pump coupling method

Abstract

The invention relates to a stamping shell method, by which compressor pump and shell is fixed connection, comprising opening groove on the main bearing and stamping shell. Opening groove on the main bearing is that before compressor assembling, four stamping grooves are machined on the circular face where main bearing is contacted with shell and their cavity is tetrahedral shape, one triangle face of the tetrahedral body is parallel with end face of the main bearing; stamping shell is that when compressor is assembled, shell is stamped from outer to inner by plunger at the position on the stamping groove of the main bearing relative to the shell outside so that stamping part of shell depresses into the stamping groove of main bearing. The invention makes compressor pump and shell without welding hole is fixed connection and increases air-tightness of compressor shell. The oil leakage of compressor is avoided.

Description

technical field [0001] The invention relates to a method for assembling a compressor, in particular to a method for connecting a pump body and a casing of the compressor. Background technique [0002] Compressors are important components of household appliances such as air conditioners and refrigerators that use the refrigeration cycle system to work. Generally speaking, the compressor uses its moving parts (rolling piston or reciprocating piston, etc.) driven by the motor to convert mechanical energy into pressure energy, realize the compression of the refrigerant in the cylinder of the compressor pump body, and compress the compressed refrigerant The discharged compressor enters the refrigeration cycle system for circulation. [0003] Commonly used compressors mainly include reciprocating piston compressors and rotary compressors. The rolling piston compressor is the most common rotary compressor. It has the characteristics of small size, simple structure, stable operati...

AI Technical Summary

Problems solved by technology

[0009] However, there is a problem of poor airtightness of the welding holes in the above-mentioned prior art compressor pump body connection method utilizing the three-point welding method.

Due to the thermal stress caused by uneven welding heating and the existence of welding slag, the airtightness of the welding hole will be affected, and the lubricating oil in the closed shell will easily leak

In particular, the rotation of the motor, the rolling of the piston, and the vibration caused by the high-pressure refrigerant spray in the cylinder cavity will reduce the airtightness of the compressor housing with welding holes.

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