Compressor assembly and air conditioning system

The invention discloses a compressor assembly and an air conditioning system. The compressor assembly comprises a compressor shell, an output device, a bearing, an oil supply device and a negative pressure device, and an inner cavity is formed in the compressor shell; the output device is arranged in the inner cavity and is provided with a rotatable output shaft; the bearing sleeves the periphery of the output shaft and is supported on the compressor shell; the oil supply device communicates with the inner cavity so as to provide lubricating oil for the bearing. The negative pressure device is connected with the oil supply device and used for providing negative pressure for the oil supply device so that lubricating oil entering the inner cavity can flow back. According to the compressor assembly, the negative pressure device is arranged, and gas in the oil supply device is pumped out under the action of negative pressure, so that the pressure in the oil supply device is reduced, lubricating oil can smoothly flow back into the oil supply device, the lubricating effect of the bearing is kept for a long time, and the performance and reliability of the compressor are improved.