Header plate and heat exchanger comprising same

摘要

The invention concerns a header plate, preferably for a heat exchanger, such as water cooled charge air cooler (WCCAC), comprising a coolant housing having two opposing walls made up from two header plates (11, 12), which are made of sheet metal of a defined thickness (t). The header plates (11, 12) form parts of air tanks and are passed by air tubes extending through said coolant housing from one of said header plates (11, 12) to the other. The header plates (11, 12) have stamped apertures (15), in which said air tubes are inserted and tightly connected to the header plate sheet metal. The apertures (15) have peripheral rims (22), which protrude on one side of the header plate (11, 12) in question and give an extra support to the air tubes inserted in the apertures (15) of said header plate (11, 12). The distance (da) between adjacent apertures (15) and thus the distance (dt) between adjacent air tubes is less than two times the thickness (t) of the header plate sheet metal.

主权项

1. A header plate (11, 12) made of sheet metal of a defined thickness (t), the header plate (11, 12) comprising:
oblong stamped apertures (15) for receiving air tubes (6) suitable to be inserted into the header plate (11, 12), said apertures (15) having peripheral rims (22); wherein the sheet metal of said header plate (11, 12) around a periphery of said stamped apertures (15) forms the peripheral rims (22), which protrude on one side of the header plate (11, 12) and give an extra support to the air tubes (6) when these are inserted in the apertures (15) of said header plate (11, 12); and a distance (da) between of adjacent apertures (15) and thus a distance (dt) between adjacent air tubes (6) is less than two times the defined thickness (t) of of the sheet metal of said header plate (11, 12), wherein said distance (da) between adjacent apertures (15) and thus the distance (dt) between adjacent air tubes (6) is measured between short sides of the oblong apertures (15) and thus between narrower sides of adjacent air tubes (6), said peripheral rims (22) having a wall thickness less than the defined thickness of said header plate (11, 12).