REFRIGERATION SYSTEM AND CONTROLLING METHOD FOR STARTING THE REFRIGERATION SYSTEM

摘要

The present invention provides a refrigeration system, including: a compressor, a condenser, an economizer, a throttle valve, and an evaporator which are connected via a pipeline; and a pneumatic valve that includes a valve body and a drive air chamber, an air outlet of the economizer being connected to an interstage air inlet of the compressor via the valve body, and the drive air chamber being connected to a low pressure portion of the refrigeration system via a first air path, the lower pressure portion having a pressure lower than that in the economizer; wherein a first valve for controlling on/off of the first air path is disposed on the first air path. The refrigeration system can avoid liquid phase refrigerant accumulated in the economizer from entering the compressor during start to cause a liquid impact problem.