Patent ID: 9297593
Filing Date: 2016-03-29
CPC Classification: F28F

Claim Text:
1. A header plate ( 1 ) of a heat exchanger, said header plate ( 1 ) equipped with crimping teeth ( 20 ) provided at its periphery and comprising a plurality of openings intended for the fixing of a plurality of tubes through which at least one fluid flows, the lateral edges of ends of said tubes have a circular cross section, said header plate ( 1 ) being grooveless and extending along a planar surface (XX), a gasket having a diameter prior to compression and disposed around a periphery of the planar surface of said header plate ( 1 ) between open ends of the tubes and a lateral edge of said header plate ( 1 ) and spaced laterally from said tubes, wherein the distance between two adjacent openings, or tube spacing (p), is less than 9.5 millimeters (mm), and wherein a height of said tubes is between 1 and 5 mm, and said header plate ( 1 ) being without sockets around said openings, and wherein said teeth ( 20 ) have a width 1 in a direction directed parallel to a long side of said header plate ( 1 ), said header plate ( 1 ) having a crimping tooth density defined as the ratio between the combined width of said teeth ( 20 ) and the length L of said long side in the straight portion thereof, the crimping tooth density to the tube spacing being between 0.04 and 0.17, in which the ratio between p-h, p being the tube spacing and h being the dimension of the short axis of the orifices through which the tubes pass, to the diameter d of said gasket ( 30 ) being between 1 and 3.