Absorption chiller

An absorption chiller comprising:

• a refrigeration cycle unit including a regenerator, a condenser, an evaporator, an absorber;
• a first supply flow path configured to supply an absorption liquid inside the absorber into the evaporator;
• a first control valve opening and closing the first supply flow path;
• a first pump configured to generate power to supply the absorption liquid inside the absorber into the evaporator;
• a control unit configured to control opening and closing of the first control valve and an operation of the first pump, the control unit being configured to open the first control valve and operate the first pump for a specified time such that a liquid inside the evaporator is mixed with the absorption liquid supplied from the absorber and into the evaporator, after an operation of the absorption chiller is stopped, and
• a second supply flow path configured to supply the liquid inside the evaporator into the absorber;
• a second control valve opening and closing the second supply flow path;
• and
• a second pump configured to generate power to supply the liquid inside the evaporator into the absorber, wherein
• the control unit is configured to open the second control valve and operate the second pump, after the operation of the absorption chiller is stopped and before the first control valve is opened and the first pump is operated.