首页>
外国专利>
Multichannel flat tube for brazed heat exchanger i.e. radiator, of motor vehicle, has metal sheet folded to form end portions of tube along semi-circle, where portions has thickness different from thickness of lower and upper parts of tube
Multichannel flat tube for brazed heat exchanger i.e. radiator, of motor vehicle, has metal sheet folded to form end portions of tube along semi-circle, where portions has thickness different from thickness of lower and upper parts of tube
The tube has a single metal sheet folded for forming end portions (7, 8) of the tube along a semi-circle having a diameter equal to a height of the tube, where the end portions present a thickness different from a thickness of flat lower and upper parts (11, 14) of the tube. End parts (15, 16) include a thickness (E3) different from the thicknesses of the end portion and the lower and upper parts and variable on a length of the end portions. The thickness of the lower and upper parts is lesser than the thickness of the end portions or the thickness of the end parts.
展开▼