| 摘要 |
PURPOSE: A dual pipe for a heat exchange is provided to improve thermal conductivity of a refrigerant by using a structure of the dual pipe, thereby improving the efficiency and the performance of a vehicle air conditioning system. CONSTITUTION: A dual pipe for a heat exchange comprises an inner pipe(100), an outer pipe(200), and a connector(300). The connector is joined to the inner and outer pipes. The connector includes an outer pipe connection unit, a coupling groove, a stopper, and a through-hole. An end portion of the outer pipe is received inside the outer pipe connection unit. The coupling groove is coupled to a supplying pipe of fluid supplying to a fluid passage formed in between the inner and outer pipes. The stopper is formed in the inner circumference of the outer pipe connection unit. The inner circumference of the through-hole is in contact with the outer circumference of the inner pipe. The connector includes a horizontal surface, a first vertical unit, and a second unit. The through-hole is formed on the horizontal surface. One end portion of the horizontal surface faces a second vertical surface where the coupling groove is arranged, and the other end portion of the horizontal surface is in contact with the first vertical unit. |
