Rotary compressor and refrigeration cycle device

A rotary compressor comprising:

• a housing configured to accommodate a motor and a compression mechanism therein;
• an exhaust pipe communicated with a high-pressure side of a refrigeration cycle device and coupled to the housing;
• a suction pipe coupled to the compression mechanism;
• and
• a liquid reservoir having a first end coupled to the suction pipe and a second end coupled to a first check valve device,
• wherein the compression mechanism comprises a pressure equalizer having a bypass hole communicating an inside of the housing with the suction pipe,
• wherein, when the motor is stopped, the bypass hole of the pressure equalizer is opened, the first check valve device is closed, and gas in the housing flows into the suction pipe or the liquid reservoir.