The objective of the present invention is to provide an air conditioning device that suppresses a decrease in the efficiency of a refrigeration cycle. The present invention is provided with: an intake tubing of which one end is connected to the intake side of a compressor and the other end is connected to an evaporator; a receiver connected to a coolant tubing connecting the evaporator and a condenser; a first bypass tubing of which one end is connected to the receiver and the other end is connected to the intake tubing, and that supplies the coolant within the receiver to the intake tubing; a flow rate adjustment valve provided to the first bypass tubing; a heat recovery section that is provided to the intake tubing downstream of the position of connection to the first bypass tubing, and that exchanges heat between the coolant within the receiver and the coolant flowing into the intake tubing from the first bypass tubing side and the evaporator side; and a control device that controls the aperture of the flow rate adjustment valve on the basis of the degree of overheating of the coolant in the heat recovery section.
