Long-lifetime compressor

Abstract

The invention discloses a long-lifetime compressor, which automatically controls the safety operation of the compressor according to the exhaust pressure by utilizing a pressure overload protector and prolongs the service life of the compressor. A pressure switch which is communicated with high-pressure gas in a compressor shell is arranged in the pressure overload protector and connected to a power supply circuit of an external power feed motor, wherein one end of the pressure switch is connected with an external power supply, and the other end of the pressure switch is connected with a compressor motor supply line. When the gas pressure is larger than a setting value, the pressure switch is switched off so as to stop supplying the power for the compressor, and the compressor stops running; when the gas pressure drops below the setting value, the pressure switch is switched on so as to recover the power supply to the compressor, and the compressor then begins to run. Therefore, the compressor can control the overload protection according to the exhaust pressure of main characteristic parameters of the compressor, avoid the compressor from running under the overload high-pressure state and prolongs the safety running time and the service life of the compressor.

Description

technical field [0001] The present invention relates to compressors, and more particularly to compressors with pressure overload protectors. Background technique [0002] Compressors are important components of household appliances such as air conditioners and refrigerators that use refrigeration cycle systems to work. Generally speaking, the compressor uses its moving parts driven by the motor, such as rolling pistons, reciprocating pistons, etc., to convert mechanical energy into pressure energy, realize the compression of the refrigerant in the compressor cylinder, and discharge the compressed refrigerant into the compressed air. The machine enters the refrigeration cycle system for refrigeration cycle flow. The performance and life of the compressor are crucial to the entire refrigeration cycle system installation. [0003] Commonly used compressors mainly include reciprocating piston compressors, rolling piston compressors, scroll compressors, and screw compressors. ...

AI Technical Summary

Problems solved by technology

[0009] In the above-mentioned prior art compressor, its overload protection device adopts an overheating protector, which is only opened and closed according to the change of temperature, and is not controlled according to the discharge pressure of the main characteristic parameters of the compressor, and the compressor is stopped from the cut-off circuit. It takes a long time to restore the operation of the compressor until the circuit is switched on. Therefore, the automatic control effect of the safe operation of the compressor is limited to a certain extent, which affects the service life of the compressor.

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