Automatic balance and compensating device for refrigeration compressor oil level

[0009] The device of the present invention takes the supplementary oil tank 6 as the main body, and the bottom of the supplementary oil tank 6 is respectively provided with a supplementary oil pipe 10 and a second solenoid valve 11, and the second solenoid valve 11 is connected to the bottom of the crankcase 13 in the compressor 1 through a communication oil pipe 12 , the upper part of the supplementary oil tank 6 is respectively provided with a communication air pipe 3 and an exhaust valve 4, the outer end of the communication air pipe 3 is connected to the upper part of the crankcase 13 in the compressor 1, and is above the oil level line of the crankcase 13, and the communication air pipe 3 The inner port of the pump extends into the bottom of the supplementary oil tank 6, wherein the absolute height of the lower port of the connecting air pipe 3 in the supplementary oil tank 6 is the absolute height of the oil level in the crankcase 13, therefore, according to the normal oil le