Patent ID: 7971635

Claim:
A collecting tank made of plastic for a heat exchanger that includes a tube block with a plurality of tubes, comprising: at least one tie rod, which is integrated into the collecting tank, formed in one piece with the collecting tank or connected to the collecting tank in a fixed manner, wherein the tie rod has at least one hollow space, formed continuously in a tensile direction of the tie rod, wherein the tie rod extends from a front side and a rear side of the collecting tank, wherein the front side and the rear side are opposite to one another, wherein the collecting tank is configured to be connected to the tube block of the heat exchanger such that the tie rod is spaced apart from the tubes of the tube block and the tie rod is not connected to the tubes of the tube block, wherein the collecting tank is configured such that a direction of flow through the hollow space of the tie rod extends orthogonally to a direction of flow through the tubes of the tube block.