Patent attributes
A refrigerant control system for controlling a first refrigerant flowing through a first circulation passage connected to a compression unit, including a storing unit which stores a first refrigerant, a first sub-pipe which is connected to an outlet side pipe, a second sub-pipe which is connected to an inlet side pipe, a first opening/closing valve which is provided in the first sub-pipe and is capable of switching whether to flow the first refrigerant in the outlet side pipe to the storing unit, a second opening/closing valve which is provided in the second sub-pipe and is capable of switching whether to flow the first refrigerant in the storing unit to the inlet side pipe, and an opening/closing control unit which controls an opening/closing state of the first opening/closing valve and the second opening/closing valve on the basis of a setting temperature of a second refrigerant set according to a predetermined method.
