BRAZING METHOD WITH APPLICATION OF BRAZING FLUX ON ONE SIDE OF A SECTION OF A FLAT TUBE FOR A HEAT EXCHANGER

摘要

The flat tube brazing method useful in an automobile vehicle such as radiator cooling motor and air-conditioning evaporator, comprises depositing a layer of brazing flow on an external and an internal side of a flat tube (10) section during a formation of the tube and after assembling of a heat exchanger. The flat tube is brazed with spacers (20), which are disposed in an exterior and an interior of the tubes. The deposition step is carried out in a form of a continuous or discontinuous row, and is carried out using a syringe, a dosing valve, an engraved roller and a paintbrush. The flat tube brazing method useful in an automobile vehicle such as radiator cooling motor and air-conditioning evaporator, comprises depositing a layer of brazing flow on an external and an internal side of a flat tube (10) section during a formation of the tube and after assembling of a heat exchanger. The flat tube is brazed with spacers (20), which are disposed in an exterior and an interior of the tubes. The deposition step is carried out in a form of a continuous or discontinuous row, and is carried out using a syringe, a dosing valve, an engraved roller, a paintbrush and by micropulverization and serigraphy. An average density of the flow on the heat exchanger surface of the tube is 0.5-8 g/m 2. An independent claim is included for a heat exchanger.