A precise oil injection system and oil injection method for compressors used in automobile air conditioners

Abstract

The invention discloses a precise oil injection system and an oil injection method for a compressor used in an automobile air conditioner. The oil injection system includes an oil storage device, a pneumatic pump, a quantitative filling machine, an electronic scale, a server, a scanning device and a compressor, the inlet of the pneumatic pump and the storage The oil device is connected, the outlet is connected with the inlet of the quantitative filling machine, the outlet of the quantitative filling machine is connected with the oil filling port of the compressor, and the electronic scale, quantitative filling machine and scanning device are all electrically connected with the server; Scan the barcode and send the scanning result to the server. The electronic scale is used to weigh the compressor and send the weight data to the server. The server sends a quantitative filling instruction to the quantitative filling machine based on the scanning result and weight data. . The present invention acquires the actual situation of the residual refrigeration oil of different compressors in the performance test system through weighing equipment, code scanning equipment, and data processing equipment, and supplements the oil filling, so that the compressors leaving the factory can accurately meet the oil filling standards.

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...

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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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