Patent ID: 7011149

Claim:
A heat exchanger comprising: a header pipe including a fluid circulation hole inside thereof; an inlet manifold including an inlet hole inside thereof; an outlet manifold including an outlet hole inside thereof; a first coupling member including a first coupling hole inside thereof; and a second coupling member including a second coupling hole inside thereof; wherein a first end of the first coupling member is connected to a first end of the header pipe and a second end of the first coupling member is connected to the inlet manifold, wherein a first end of the second coupling member is connected to a second end of the header pipe and a second end of second coupling member is connected to the outlet manifold, wherein in the first coupling member, a first end of the first coupling hole is opened to a first end of the fluid circulation hole and a second end of the first coupling hole is opened to the inlet hole, wherein in the second coupling member, a first end of the second coupling hole is opened to a second end of the fluid circulation hole and a second end of the second coupling hole is opened to the outlet hole, wherein a first pipe side connection hole, which has a diameter that is larger than that of the first end of the fluid circulation hole and which is for housing the first end of the first coupling member, is formed on the first end of the header pipe, and wherein a second pipe side connection hole, which has a diameter that is larger than that of the second end of the fluid circulation hole and which is for housing the first end of the second coupling member, is formed on second end of the header pipe.