A coolant pipe connection structure and the air conditioner including the same group

Discloses an easily the refrigerant pipe has a structure that can be connected to a coolant pipe connection structure and an air conditioner including the same to the indoor unit or outdoor unit of an air conditioner. A coolant pipe connection structure is the refrigerant flowing through the refrigerant pipe; and a lock nut and that, with the socket which is connected to one end of the coolant pipe (Socket) unit, coupled to the outer peripheral surface socket (Socket) portion. Socket (Socket) portion inner peripheral surface has at least one O for preventing the coolant tube is a refrigerant leak from the socket grip ring (Grip-ring) to prevent a departure from (Socket) portion and a socket (Socket) part - ring (O-ring) and the grip ring (grip-ring) and the O-ring is disposed between the (O-ring) O-ring (O-ring) washers to prevent the damage is provided.