Precision oil-injecting system for automobile conditioner compressors and oil injection method based thereon

Abstract

The invention discloses a precision oil-injecting system for automobile conditioner compressors and an oil injection method based thereon. The precision oil-injecting system for automobile conditionercompressors comprises an oil storage device, a pneumatic pump, a quantitative injector, an electronic scale, a server, a scanning device and a compressor; an inlet of the pneumatic pump is communicated with the oil storage device; an outlet of the pneumatic pump is communicated with an inlet of the quantitative injector; an outlet of the quantitative injector is communicated with an oil inlet ofa compressor; all the electronic scale, the quantitative injector and the scanning device are electrically connected to the server; the scanning device scans a bar code on the compressor and transmitsa scanning result to the server; the electronic scale is used for weighing the compressor and transmitting weight data to the server; the server sends a quantitative injection command to the quantitative injector according to the scanning result and the weight data. The precision oil-injecting system for automobile conditioner compressors and the oil injection method based thereon have the advantages that oil is supplementarily injected according to the actual conditions, acquired through a weighing apparatus, a code scanning apparatus and a data processing apparatus, of refrigerant oil leftby the different compressors in a performance test system, and the precision of ex-factory compressors is enabled to meet the oil injection standard.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a precise oiling system and oiling method for compressors used in automobile air conditioners. Background technique [0002] The compressor for automotive air conditioning is an important part of the automotive air conditioning system. Its function is to convert the low-temperature, low-pressure gaseous refrigerant from the evaporator into a high-temperature, high-pressure gaseous refrigerant through compression, and send it to the condenser. At present, there are two types of automotive air-conditioning compressors: electric compressors and traditional compressors. Electric compressors are mainly used in new energy vehicles. They are driven by electric motors and are used to compress refrigerant vapor in the air-conditioning system of automobiles. It includes the main part of the electric compressor and the drive controller. Traditional compressors are mainly used on fuel vehicles, g...

AI Technical Summary

Problems solved by technology

[0004] After filling the quantitative refrigeration oil that meets the standard, it is necessary to perform a performance test on the compressor under simulated working conditions. However, during the performance test, some refrigeration oil will remain in the test system, making the compressor that has completed the performance test The amount of refrigeration oil is less than before the test

In the prior art, after the performance test is passed, no secondary refilling will be performed, resulting in the actual oil storage capacity of the compressor not meeting the standard, increasing the load on the compressor, and long-term operation may lead to compressor ablation; Refrigeration oil can not be filled too much, otherwise it will affect the heat exchange capacity of the evaporator, resulting in poor cooling of the air conditioner

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